flowseal/zapret-discord-youtube

This repository packages a Windows-friendly preconfigured version of zapret, an open-source traffic-manipulation tool by bol-van. The README is mostly in Russian and explains how to use it to keep services like Discord and YouTube working when network providers throttle or interfere with them through Deep Packet Inspection (DPI). Under the hood it uses WinDivert, a kernel driver that intercepts and filters network packets on Windows, the README explains that WinDivert is the Windows equivalent of iptables and NFQUEUE on Linux, is not itself a virus, but is sometimes flagged by antivirus software, with guidance on how to whitelist it. In practice you download the latest release archive, unblock and unpack it to a path that contains no Cyrillic or special characters, and then run one of the bundled .bat files. general.bat runs a chosen strategy manually for testing, service.bat installs a strategy as a Windows autostart service and exposes related actions such as removing the service, checking status, toggling a Game Filter for UDP/TCP traffic on ports above 1023, switching an IPSet filter mode, running diagnostics, updating the hosts file (notably for the web version of Telegram and Discord voice chat), and running tests against a list of target sites and DPI checkers like Cloudflare and Amazon. You would use this on a Windows machine if Discord, YouTube, or similar services have become unreliable on your network and you want a packaged set of zapret strategies and tooling to try. The README is firm that strategies stop working over time as detection improves, so you may need to try ALT, FAKE, or other variants, or build a new strategy by modifying an existing one.